Phytec phyFLEX-i.MX 6 - Universal Asynchronous Interface (UART)

phyFLEX
®
-i.MX 6 [PFL-A-XL1-xxx
44  PHYTEC Messtechnik GmbH 2013 L-773e_2
8.1 Universal Asynchronous Interface
The phyFLEX-i.MX 6 provides two high speed universal
asynchronous interfaces with up to 4 MHz and one with additional
hardware flow control (RTS and CTS signals). The following table
shows the location of the signals on the phyFLEX-Connector.
Pin # Signal ST Voltage Domain Description
X1A12
X_UART1_TxD_TTL O VDD_3V3_LOGIC
UART3 serial
transmit signal
X1A13
X_UART1_RxD_TTL I VDD_3V3_LOGIC
UART3 serial data
receive signal
X1A14
X_UART1_RTS_TTL O VDD_3V3_LOGIC
UART3 request to
send
X1A15
X_UART1_CTS_TTL I VDD_3V3_LOGIC
UART3 clear to
send
X1A17
reference-voltage REF_O VDD_3V3_LOGIC
UART3 reference
voltage
X1A18
X_UART0_TxD_TTL O VDD_3V3_LOGIC
UART4 serial
transmit signal
X1A19
reference-voltage REF_O VDD_3V3_LOGIC
UART4 reference
voltage
X1A20
X_UART0_RxD_TTL I VDD_3V3_LOGIC
UART4 serial data
receive signal
Table 16: Location of the UART Signals
The signals extend from UART3 respectively UART4 of the i.MX 6
directly to the phyFLEX-Connector without conversion to RS-232
level. External RS-232 transceivers must be attached by the user if
RS-232 levels are required.
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